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Oracle Database Quiz Section 3 Quiz Answer

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1.     What are the three properties that every relationship should have?
Name, optionality, cardinality (*)
A UID bar, a diamond, an arc
Name, optionality, arcs
Transferability, degree, name

2.     Relationships can be either mandatory or optional. True or False?
True (*)
False

3.     In a business that sells pet food, choose the best relationship name between FOOD TYPE and ANIMAL (e.g. dog, horse, or cat). (Choose Two)
Each ANIMAL must be the seller of one or more FOOD TYPES.
Each FOOD TYPE may be manufactured by one or more ANIMALs.
Each FOOD TYPE must be suitable for one or more ANIMALs. (*)
Each FOOD TYPE may be given to one or more ANIMALs. (*)

4.     One Relationship can be mandatory in one direction and optional in the other direction. True or False?
True (*)
False

5.     Which of the following are used to show Cardinality on an ERD? (Choose two)
Crow's foot. (*)
Solid line.
Single toe. (*)
Dashed line.

6.     Which of the following are true about Cardinality? (Choose two)
Cardinality tells "how many". (*)
Cardinality specifies a counting number (like 1, 2, 3, 4 etc.) in a relationship.
Cardinality specifies whether something is required or not.
Cardinality specifies only singularity or plurality, but not a specific plural number. (*)

7.     Which symbol is used to show that a particular attribute is mandatory?
&
#
o
* (*)

8.     Entity boxes are drawn as
Soft Boxes (*)
Hard Boxes
Normal Circles
Bold Circles

9.     ERDish describes a relationship in words. True or False?
True (*)
False

10.  Which of the following are used to show a relationship on an ERD? (Choose Three)
Dashed line. (*)
Crow's foot. (*)
Solid line. (*)
# symbol.

11.  When reading a relationship between 2 entities, the relationship is read both from left to right and right to left. True or False?
True (*)
False

12.  Relationship names are not shown on an ERD. True or False?
True
False (*)

13.  Matrix Diagrams show Optionality and Cardinality of the ERDs they document. True or False?
True
False (*)

14.  Matrix Diagrams are developed BEFORE the ERD. True or False?
True (*)
False

15.  Matrix Diagrams are used to verify that all relationships have been identified for an ERD. True or False?
True (*)
False


1.     Which of the following are used to show a relationship on an ERD? (Choose Three)
# symbol.
Solid line. (*)
Dashed line. (*)
Crow's foot. (*)

2.     Relationship names are not shown on an ERD. True or False?
True
False (*)

3.     When reading the relationships in an ERD, you are said to be speaking:
Entity-ish
Gibberish
ERDish (*)
Relationship-ish

4.     ERDish describes a relationship in words. True or False?
True (*)
False

5.     What are the three properties that every relationship should have?
Name, optionality, arcs
Transferability, degree, name
Name, optionality, cardinality (*)
A UID bar, a diamond, an arc

6.     Relationships can be either mandatory or optional. True or False?
True (*)
False

7.     Which of the following are used to show Cardinality on an ERD? (Choose two)
Single toe. (*)
Dashed line.
Crow's foot. (*)
Solid line.

8.     Relationships always exist between
3 or more attributes
3 or more entities
2 entities (or one entity and itself) (*)
2 attributes

9.     In a business that sells pet food, choose the best relationship name between FOOD TYPE and ANIMAL (e.g. dog, horse, or cat). (Choose Two)
Each ANIMAL must be the seller of one or more FOOD TYPES.
Each FOOD TYPE may be given to one or more ANIMALs. (*)
Each FOOD TYPE may be manufactured by one or more ANIMALs.
Each FOOD TYPE must be suitable for one or more ANIMALs. (*)

10.   Which of the following are true about Cardinality? (Choose two)
Cardinality specifies whether something is required or not.
Cardinality specifies only singularity or plurality, but not a specific plural number. (*)
Cardinality tells "how many". (*)
Cardinality specifies a counting number (like 1, 2, 3, 4 etc.) in a relationship.

11.   To identify an attribute as part of a unique identifier on an ER diagram, the # symbol goes in front of it. True or False?
True (*)
False

12.   Entity names are always singular. True or False?
True (*)
False

13.   Matrix Diagrams show Optionality and Cardinality of the ERDs they document. True or False?
True
False (*)

14.   Matrix Diagrams are developed BEFORE the ERD. True or False?
True (*)
False

15.   Matrix Diagrams are used to verify that all relationships have been identified for an ERD. True or False?
True (*)
False


1.      Entity names are always singular. True or False?
True (*)
False

2.      Entity boxes are drawn as
Normal Circles
Hard Boxes
Soft Boxes (*)
Bold Circles

3.      Relationship names are not shown on an ERD. True or False?
True
False (*)

4.      ERDish describes a relationship in words. True or False?
True (*)
False

5.     Which of the following are used to show a relationship on an ERD? (Choose Three)
Crow's foot. (*)
Solid line. (*)
# symbol.
Dashed line. (*)

6.     When reading a relationship between 2 entities, the relationship is read both from left to right and right to left. True or False?
True (*)
False

7.     Which of the following are true about Cardinality? (Choose two)
Cardinality specifies whether something is required or not.
Cardinality tells "how many". (*)
Cardinality specifies only singularity or plurality, but not a specific plural number. (*)
Cardinality specifies a counting number (like 1, 2, 3, 4 etc.) in a relationship.

8.     Which of the following are true about Relationship Optionality? (Choose two)
Optionality specifies only singularity or plurality, but not a specific plural number.
Optionality answers "may or must". (*)
Optionality specifies a counting number (like 1, 2, 3, 4 etc.) in a relationship.
Optionality specifies whether something is required or not. (*)

9.     In a business that sells pet food, choose the best relationship name between FOOD TYPE and ANIMAL (e.g. dog, horse, or cat). (Choose Two)
Each FOOD TYPE may be given to one or more ANIMALs. (*)
Each FOOD TYPE may be manufactured by one or more ANIMALs.
Each FOOD TYPE must be suitable for one or more ANIMALs. (*)
Each ANIMAL must be the seller of one or more FOOD TYPES.

10.  What are the three properties that every relationship should have?
Transferability, degree, name
Name, optionality, arcs
Name, optionality, cardinality (*)
A UID bar, a diamond, an arc

11.  Relationship Cardinality is important. True or False?
True (*)
False

12.  Relationships can be either mandatory or optional. True or False?
True (*)
False

13.  Matrix Diagrams are used to verify that all relationships have been identified for an ERD. True or False?
True (*)
False

14.  Matrix Diagrams are developed BEFORE the ERD. True or False?
True (*)
False

15.  Matrix Diagrams show Optionality and Cardinality of the ERDs they document. True or False?
True
False (*)


1.     Entity boxes are drawn as
Normal Circles
Hard Boxes
Bold Circles
Soft Boxes (*)

2.      Entity names are always singular. True or False?
True (*)
False

3.      Matrix Diagrams are developed BEFORE the ERD. True or False?
True (*)
False

4.      Matrix Diagrams show Optionality and Cardinality of the ERDs they document. True or False?
True
False (*)

5.     Matrix Diagrams are used to verify that all relationships have been identified for an ERD. True or False?
True (*)
False

6.     Which of the following are used to show a relationship on an ERD? (Choose Three)
# symbol.
Dashed line. (*)
Crow's foot. (*)
Solid line. (*)

7.     When reading the relationships in an ERD, you are said to be speaking:
Entity-ish
Relationship-ish
Gibberish
ERDish (*)

8.     Relationship names are not shown on an ERD. True or False?
True
False (*)

9.     ERDish describes a relationship in words. True or False?
True (*)
False

10.  Which of the following are true about Relationship Optionality? (Choose two)
Optionality specifies a counting number (like 1, 2, 3, 4 etc.) in a relationship.
Optionality answers "may or must". (*)
Optionality specifies only singularity or plurality, but not a specific plural number.
Optionality specifies whether something is required or not. (*)

11.  One Relationship can be mandatory in one direction and optional in the other direction. True or False?
True (*)
False

12.  Relationships always exist between
3 or more attributes
3 or more entities
2 entities (or one entity and itself) (*)
2 attributes
13.  Which of the following are true about Cardinality? (Choose two)
Cardinality specifies whether something is required or not.
Cardinality specifies a counting number (like 1, 2, 3, 4 etc.) in a relationship.
Cardinality tells "how many". (*)
Cardinality specifies only singularity or plurality, but not a specific plural number. (*)

14.  Which of the following are used to show Cardinality on an ERD? (Choose two)
Single toe. (*)
Crow's foot. (*)
Dashed line.
Solid line.

15.  What are the three properties that every relationship should have?
A UID bar, a diamond, an arc
Transferability, degree, name
Name, optionality, cardinality (*)
Name, optionality, arcs

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